"Magnetic field strengths are measured in tesla (T), a derived SI unit. The equivalent, and superseded, cgs unit is the gauss (G); one tesla equals 10,000 gauss. The earth's magnetic field is about 31 microtesla. The strength of electromagnets used to pick up cars in junk yards is about the static field strength of most MRI machines (1.5-2.0 T)."
"magnetism"
"Magnetic field strengths are measured in tesla (T), a derived SI unit. The equivalent, and superseded, cgs unit is the gauss (G); one tesla equals 10,000 gauss. The earth's magnetic field is about 31 microtesla. The strength of electromagnets used to pick up cars in junk yards is about the static field strength of most MRI machines (1.5-2.0 T)."